Woodworking machinery



Ma r. 3. .1925. 1,528,536

R. E. DE WALT WOODWORKING MACHINERY Filed L 27, 1923 2 Sheets-Sheet 1 AONEY R. E. DE WALT WOODWORKING MACHINERY Filed Jan. 27, 1923 2Sheets-Sheet 2 %TORNE Y f Patented M. a, 1925.

UNITED 'srATEs PAT'EN/T OFFICE.-

RAYIOND DE WALT, OF BRIDGE'I'ON', NEW

'WOODWOBKING KAC HHQEBY.

Application filed January 27, 1923'. Serial 1T0. 615,1.

To all w hom z't many-concern: Be it known that I. RAYMOND E. Dn

. WAIII, a citizen of the United States, residing at Brid 'ton, in thecounty of Cumberland and tate of New Jersey, have invented certainnewand useful Improvements in Woodworking Machinery, of which thefollowing is a specification.

This invention relates generally to woodworking machines 6f the type inwhich one or more tools can be mdunted in different I positionstoperform a variety of operations.

In the field of wood-working there is a considerable demand for amachine of a universal character that can be quickly adjusted; toperform a great many different I operations ordinarily performed on asmany different machines. The ability to eliminate supporting arm ismounted for vertical adjustment along and angular adjustment about abase pedestal that can be attached to a work bench ad'acent its rearedge and close to a wall. e horizontal out-standing arm is provided withan internal "track or slideway to receive a yoke which can be locked inany desired osition to hold a motor pivotally mounte for preciseapplication of a cutting or other tool at any desired angularapplication to the work.

In'the drawings; in which a referred form of the invention has been soected for illustration, I

Figure 1 is a viewin side elevation of a wood-working machine embodyingthe invention. a Figure 2 is. an elevation. of the device shown inFigure 1 looking from the right.- Fi e 3 is a sectional etail viewshowing t e pivotal connection-between a vertical post andia-toolsupportingarm forming part of. the invention.

Figure 4 is a view in I atool-operating motormiounted in two positionsin its supporting yoke.

Figure 5v is a' view side elevation show- Figure4 angles to the positionshown in Eigure 4.

Figure 6 is a detail view in section showing the construction forlocking the yoke stem against rotation in its supporting slid: ingblock. y

Figure 7 is a view in perspective of the slidable block which supportsthe yoke.

,Figu-re 8 is a view similar to Figure 7 showing a portion of the armand slideway in which the slidable block shown in Figure 7 operates.

Figure '9 is a view in perspective and on showing the motor and yoketurned at right an enlarged scale of the yoke'stem shown in Figure 6. 1

Referring to the.drawings for a more detailed description of theinvention, at 5 is shown a base pedestal that is adapted to be attachedto the top 6 of a work bench.

A post 7 .is adapated to be supported in the pedestal 5 and to extenddownwardly through an opening 8 in the bench top 6 in lowered positionof the post. A vertical groove 9 in the postis arranged to be engaged bya set screw 10 to hold the post 7 in various positions .of verticalvadjust-; ment. To change the vertical adjustment of the post 7 a handcrank 11 operates through bevel gears 12 to rotate a screw 13 which hasthreaded engagement with ,a lug 14 on the pedestal 5:

The upper extremity of the post 7 is fully formed pivotal jointconnection withacorresponding flange 16 formed at one end ofa-horizontally projecting arm 17. In order to increase the accuracy offit of. the

two flanges to each other their confronting faces are provided with acircular and concentric projecting area 18 fitting into a correspondmglyform'ed depression 19. while a post 20 set in the end of the post 7forms a. pintle pin about which the arm 17 may have swinging pivotalmovement. A, suitable nut 21 may be employed to lock the arm 17 in any.desired angular position on the post 7. For convenience in setting thearm 17 at the desired angular position the periphery of one or other ofthe flanges 15 or 16 may be calibrated,as at 22, for cooperation wit afixed reference mark 23.

.. The arm 17 is grooved out throughout its length to rovlde a pair ofinwardly expanded into a flange 15which has a careextending tree 'orslideways 24 and the u groove and slideways receive and fit the or stemfor a yoke mlember 28.

contour of a slide block having a frustoconical formation incrossesection.

' The slide block 25 is provided at a central portion with around'opening or perforation 26 to receive a bolt 27 forming a supportThe stem 27 has a *square head member 29 adapted to be received in atransverse groove ,30 in the upper surface of the slide block to pre--vent rotation of'the stem about its axis. A set screw 31 carried by theslide block is used to lock the. bolt or stem 27 rigidly in position. r

In order to change the angular adjustment of the bolt 27 and yoke 28,the bolt is lifted -'until its head clears the top of the slide block,as id dotted lines in Figure 6, when the yoke may be rotated and againlowered to be held against angular movement by the engagement of thebolt head with the groove in the slide block.

7 It will be seen that the slide block 25 may be moved along theslideways 24 in the arm 17 to any desired position and locked in theselected osition by means of a set screw 32 having t readed engagementwith a lug 33 on the slide block and adapted to, bear against the lowersurface of one of the slideways 24, or by means of the pinch bolts 17extending across the upper part of the slideway and forming screwmeansfor squeezing the separated sides of the arm together against theslide block.

The yoke 28, to which reference has been made, supports between its armsa small electric motor 35. The casing of the motor is pivotally mountedin the yoke and preferably carries a quadrant member 36 provided withthree or more holes 37 adapted to be engaged by a pin or bolt 38 carriedby the yoke. By this arrangement the motor can be mounted in differentpositions, as indicated in Figure 4 of the drawings, to hold.

a tool such as a saw'39 in a horizontal, a

vertical, or in an oblique position to .suit

the requirements of the work. -Further ad-.

justlnents can be obtained by rotating the yoke in its seat in the slideblock 25 in a manner already described and indicated in Figure 5 of thedrawings.

It will be seen that a great number and variety of posit-ions of theoperating tool can be provided by means of the various adjustmentsdescribed. In addition the slideway. provided by the arm 17 furnishes aguide along which the yoke can be moved through the use of the handle 40to move the tool along directing lines placed in readily discerniblepositions on the surfaces of the material facing the operator. Differenttools can be mounted on either end of the motor spindle or a drivepulley 41 can be provided for a belt drive connection with otherdevices, not shown, such as a jig saw attachment, a lathe attachment orthe like. The machine is compact and s1m- 'ple in construction andhandles close work with a high degree of precision and. while it hasbeen particularly described in conncction with wood-working, it will beclear that it may be equally as well used for other purposes.

What is claimed is 1. In a wood-working machine, a hollow pedestaladapted to be attached to a work bench, a post mounted in said hollowpedestal and having a splined-connection therewith for verticalnonrotative adjustment, a

horizontally extending arm rotatably adj ust- 30 ed on the upper end ofthe post, a supporting member mounted for adjustment along said arm, anda tool-operating motor adjustably. carried by said supporting member.

.2. In a wood-working machine, a hollow pedestal adapted to be attachedto a work bench, a post mounted in said hollow edestal and adapted to bevertically ad usted therein, a horizontally extending arm attached atone end to the upper end of the post for angular adjustment thereon in ahorizontal plane, a slide block movable along said arm a yoke dependingfrom said slide block and adjustably supported thereby, and atool-operating motor pivotally mounted in said yoke.

3. In a wood-working machine, a hollow pedestal adapted to be attachedto a work bench,a post mounted in said hollow pedestal'and adapted to bevertically adjusted therein, a horizontally extending arm attached atone end to the upper end of the post for angular adjustment in ahorizontal plane thereon, a slide block movable alon said arm, means forlocking the slide block cally adjustable post provided with means forsecuring the same at different elevations, a swinging arm pivoted tosaid post for swinging in a substantially. horizontal plane, a toolcarrying block slidably mounted on said arm, and a tool carrying motorsupported by said blockand adapted to be adjusted about a vertical axisand swingable about an axis substantially normal to said vertical axisand means to secure said motor in adjusted position.

5. In a machine of the character disclosed, a horizontally swinging armhaving a' slideway groove extending longitudinall of the same and openat the bottom, a sli e block in said slideway, a yoke having a stem,said stem interlockingly engaged with said slide block to afforddifferent angularly adjusted positions in the slide block and operatingthrough the open slideway and a tool. I

-'-all v secured on the upper end of said verti-' ating motor carried bythe carriage.

cally adjustable post and held in different. angularly outstandingrelations thereon, said arm hdving a longitudinal guideway in the underside of the sa.me,'. a carriage operating in said guideway and a tooloper- 8. In a machine of the character disclosed, a horizontallyswinging arm having a longitudinal slideway with a slot open to thebottom of the arm, a block engaged in said slideway and carrying a partprojecting down through the slot, a screw for compressing the separatedside portions of the arm against the slide block ior securing the samein adjusted relation and atool operating motor adjust-ably'carried bythe part which projects down through the slot in the laterally swingingarm.

9. In a machine of the character disclosed. a vertically adjustablepost, a, horizontally swinging arm pivoted on the upper end of saidpost,,means for securing said arm in different angula'rly adjustedrelations, said arm having spaced sides with a trackway therebetween, acarriage adjustable along said trackway, screw means for clamping thesides of the arm against the carriage to secure the same in variouslyadjusted relations and a tool operating motor supported by the carriageand adjustable about vertical and horizontal axes.

10. In a machine'o-f the character disclosed, a tool operating motor, acarriage in which said motor is supported for differ-i ent angularpositions, said carriage comprising a slide block of frusto conicalcross section, af slideway having ledges for engagement beneath the baseof the slide block and over-standing inwardly inclined members forbearing on the frusto conical in- 'clined sides of the slide and meansfor pinching the sides of. the trackway together to grip the frustoconical slide block 11. In a machine of the character disclosed, a tooloperating motor, a carriage in which said motor is supported fordifferent angular positions, said carnage comprlsmg a slide block offrusto conlcal cross sectlon,

a slideway having ledges for engagement beneath the base of the slideblock and overstanding inwardly inclined members for bearing on thefrusto conical mclmed sides of the slide and means for pinching thesides of the trackway together to grip the frusto conical slide block,said slide block having a transverse seat in the top of the T same andthe adjustment of the motor about a vertical axis being effected by abolt ex tending up through the slide block and having a transverselyextending head engageable in .difierent angular relations in said seat.

closed, a tool operating motor, a yoke in which said motor is angularlyadjustable about a horizontal axis, said yoke having a In testimonywhereof I aflix my signature in presence of two witnesses.

RAYMOND E. DE WALT.

Witnesses:

IRVING H. BONHAM, PHILIP S. DUFFIELD.

12. In a machine of the character disa

